GPS Navigation with electronic maps, expandable into a full-fledged navigation system (the first navigation software that properly supports Finland will be released this fall. I currently have two cd's of detailed digital maps of Finland but without directions and guidance: only GPS position plotting is supported)
Playback of MP3's. Houses a collection of all my CD's (about 200) on the hard disk
Playback of DVD videos, both from the disk and ripped into the hard drive
Television, currently with DVB (Digital video broadcasting, Digi-TV) tuner
Internet and email using the GSM mobile data
Word, Excel and other essential tools for a mobile office
Touch screen to control the operation of the PC
A LCD screen with good enough quality to watch videos, visibility for all passangers
Voice controls and speech recognition